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From:   Alex Elder <elder@linaro.org>
To:     robh+dt@kernel.org, davem@davemloft.net, kuba@kernel.org
Cc:     bjorn.andersson@linaro.org, agross@kernel.org, mka@chromium.org,
        evgreen@chromium.org, cpratapa@codeaurora.org,
        avuyyuru@codeaurora.org, jponduru@codeaurora.org,
        subashab@codeaurora.org, elder@kernel.org, netdev@vger.kernel.org,
        devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: [PATCH net v2 1/2] dt-bindings: net: qcom,ipa: add optional qcom,qmp property
Date:   Tue,  1 Feb 2022 09:02:04 -0600
Message-Id: <20220201150205.468403-2-elder@linaro.org>
In-Reply-To: <20220201150205.468403-1-elder@linaro.org>
References: <20220201150205.468403-1-elder@linaro.org>
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For some systems, the IPA driver must make a request to ensure that
its registers are retained across power collapse of the IPA hardware.
On such systems, we'll use the existence of the "qcom,qmp" property
as a signal that this request is required.

Signed-off-by: Alex Elder <elder@linaro.org>
---
 Documentation/devicetree/bindings/net/qcom,ipa.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/qcom,ipa.yaml b/Documentation/devicetree/bindings/net/qcom,ipa.yaml
index b86edf67ce626..58ecc62adfaae 100644
--- a/Documentation/devicetree/bindings/net/qcom,ipa.yaml
+++ b/Documentation/devicetree/bindings/net/qcom,ipa.yaml
@@ -107,6 +107,10 @@ properties:
           - const: imem
           - const: config
 
+  qcom,qmp:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: phandle to the AOSS side-channel message RAM
+
   qcom,smem-states:
     $ref: /schemas/types.yaml#/definitions/phandle-array
     description: State bits used in by the AP to signal the modem.
@@ -222,6 +226,8 @@ examples:
                                      "imem",
                                      "config";
 
+                qcom,qmp = <&aoss_qmp>;
+
                 qcom,smem-states = <&ipa_smp2p_out 0>,
                                    <&ipa_smp2p_out 1>;
                 qcom,smem-state-names = "ipa-clock-enabled-valid",
-- 
2.32.0